94 The Ottawa Naturalist. [August 



CONCHOLOGY. 



On an Addition to the Mollluscan Fauna of Canada. 

 By Bry.-vnt Walker, Detroit, Mich., U.S.A. 

 While examining recently a suite of Gastrodonta jntUtidentata^ 

 Say, from Ottawa, received several years ago from Mr. Gilbert 

 Heron, I was surprised to find a single well marked specimen of 

 Gastrodonta latnellidens Pils. This little species was described in 

 1898 from specimens collected in 1897 in the Great Smoky Moun- 

 tains of Tennessee. It was then supposed to be peculiar to the 

 southern Appalachians. But recently specimens have been 

 recorded, from Deering, N.H., and Greenwich and Litchfield, N.Y. 

 This new find extends its range far to the north and west of any 

 previous records. It is very rare, even in Tennessee. For the 

 benefit of those who are not familiar with it, it may be stated that 

 in size and shape it is very similar to G. multidentata, but instead 

 of having two or three radiating rows of separate teeth on the 

 internal base of the shell, there are two or three long, radiating, 

 somewhat flexuose lamellae similarly situated. 



In the Ottawa specimen referred to, these lamella? appear to 

 be more slender and rather more bent than in specimens from 

 the original locality. It is quite possible that this species is more 

 widely extended than has been supposed, but has been hitherto 

 overlooked from its great similarity to G. ynultidentata. It is 

 very desirable that collectors should carefully examine their suites 

 of that species for specimens of lamellidens. Any new localities 

 should be reported at once for publication in the proceedings of 

 this society. 



BOTANY. 



Botanical Club of Canada — Annual Report for the year May 

 20th, 1898, to May 20th, 1899, issued as part of vol. v. 

 Trans. Roy. Soc. Can., 2nd series, 1899- 1900 (35 pages). 

 Distributed March 31st, 1900, by Dr. A. H. MacKay, 

 General Secretary-Treasurer. 



This report contains a sketch of the history of " Phenological 

 Observations in Canada." It also indicates the progress of 

 botanical research, points out the results obtained in Newfound- 



